Door-lock.



L. F, ROBERTS.

DOOR LOOK.

APPLICATION FILED AUGA, 1909.

Patented Feb. 15, 1910.

2 SHEETS-SHEET l Mm We R F N m m z WITNESSES ,4 TTOR/VE INVENTOR LE P:ROBERTS.

DOOR LOUK. APPLICATION FILED AUG. 4, 1909.

Patented Feb. 15, 1910.

2 SHEBTSSHEBT 2.

WITNESSES BY r4 Vim M J.

ATTORNEYS rattan earns rarer @Fi iQE.

LEANDER F. ROBERTS, OF HOWARD, KANSAS.

DOOR-LOCK.

castle.

Application filed August 4, 1909.

To all whom it may concern:

Be it known that I, LEANDER F. ROBERTS, a citizen of the United States,and a resident of Howard, in the county of Elk and State of Kansas, haveinvented a new and Improved Door-Lock, of which the following is a full,clear, and exact description.

This invention relates to door locks of the combination type, and hasfor its object to provide a lock of that type, which is very simple andembodies novel details, that adapt the lock for service as a door latch,that may be freely operated by means of a knob on the inner side of thedoor, but which will require manipulation of latch controlling disks,set to a certain combination, for release of the latch bolt from theexterior of the door.

"he invention consists in the novel construction and combination ofparts, as is hereinafter described and defined in the appended claims.

Reference is to be had to the accompanying drawings forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the views.

Figure 1 is an outer side view of details of the improved lock mountedupon a face plate that is secured upon a door; Fig. 2 is a partlysectional side view, showing the latch bolt thrown into locked position,a side of the lock case being removed; Fig. 3 is a similar view withFig. 2, but showing the nose of the latch bolt retracted, by a changedadjustment of working parts of the lock; Fig. at is a longitudinaltransverse sectional view, substantially on the line 4-1 in Fig. 3; Fig.5 is a vertical transverse sectional view, substantially on the line 5-5in Fig. 2; Fig. 6 is a side view of a tumbler disk, that is one of aplurality employed; Fig. 7 is an edge view of the tumbler disk shown inFig. 6, seen in the direction of an arrow thereat; Fig. 8 is a detachedside view of two slide bars slidably connected together, and adapted forindependent movement, and of a latch bolt from which one slide-bar islongitudinally extended; Fig. 9 is a vertical transverse sectional viewof details of the combination mechanism taken substantially on the line9-9 in Fig. 1; Fig. 10 is a side view of a tumbler disk, slightlydifiering in construction from that shown in Fig. 6; and

Specification of Letters Patent.

Patented Feb. 15, 1910.

Serial No. 511,157.

Fig. 11 is a partly sectional side view of a knob spindle and knobsthereon shown in section.

12 indicates the case of the lock, which is preferably adapted forinsertion within a horizontal mortise formed in the edge of a door stileas usual. The case 12 is of oblong, rectangular form, having a removableside wall 12, that is parallel with the opposite side wall 12, which mayalso be made removable if this is preferred, as is indicated in Fig. 4.In one end wall 12, of the case 12, a rectangular opening is formed forthe insertion of a slide bolt from the interior of the case outwardly.The latch nose 13, for the slide bolt, is rectangular in cross section,and fits loosely in the opening provided for its accommodation in theend wall 12 of the case, said nose having one side thereof sloped andslightly convexed, to adapt it for engagement with a common strike plateon a door casement in the usual manner, not shown. From the latch boltnose 13, a fiat thin slide bar it is extended to a point a, parallel onits side edges and of an equal width with the latch bolt body and nose13. Two limbs 15, similar to the limbs 15 shown in Figs. 2 and 3, andthat are covered by said limbs 15, are formed on the side bar portion 11, and said limbs 15, that diverge at a, are spaced apart and renderedparallel with each other.

At a suitable distance from the front end of the wall 12, of the case12, a knob spindie is transversely inserted through opposite openings inthe side walls 12 12 said spindle which is rectangular in cross section,consisting of two sections 16, 16 that are loosely connected together attheir inner ends, by a pin 16, on one section that occupies alongitudinal socket in the other section, as shown in Fig. 11. The pin16 is peripherally grooved, as shown at f in Figs. 2, 3 and 11, saidgroove being engaged by a detent pin 7" that is inserted at a properpoint transversely through a perforation in the spindle section 16, thisswivel connection permitting a free rotation of one section of the knobspindle on the other one. On the knob spindle two similar roll backs 17,1'7 are mounted side by side, and respectively secured on the spindlesections 16, 16 and upon the outer ends of said sections knobs 16 aresecured, as indicated in Fig. 11. Each of the similar roll backs 17, 17is formed having two oppositely extended limbs b, that are of an equallength and preferably have their corners that are farthest from the endwall 12, rendered convex as shown at b.

At a proper distance from the front wall of the case 12, and in the sidewall 12 thereof that is farthest from the outer surface of a doorwhereon the lock is placed, a tubular post 18 is secured by one end, andthence extends toward the opposite side wall 12". On the post 18, aplurality of tumbler disks are loosely mounted, three of said disksbeing shown, but it is to be understood that the numbers may beincreased if a more complicated construction is preferred. Two of thedisks designated by the numerals 19 are centrally and circularlyperforated, and are rotatably mounted upon the post 18 near the sidewall 12 one disk being spaced from the other by a washer or collar. Thedisks 19 are of equal diameter, are circular on their peripheries, andfrom each on their adjacent sides a stud 0 projects, that may impingeupon each other when said disks are rotatably adjusted for such apurpose. The remaining tumbler disk 19 which in service is nearest tothe side wall 12 of the case 12, is circularly recessed in its center,and said recess receives the free end of the post, as is best shown inFig. 9. A hub (Z is formed or secured on the opposite side of thetumbler disk 19, said hub having a loose contact with the inner surfaceof the outer side wall 12 of the case or a washer therebetween, and inthe hub a central square perforation d is formed. Upon the outer side ofthe case side wall that is adjacent to the hub (Z, an indicator plate 21is secured, having a central circular perforation therein that isdisposed opposite the square bore in the hub (Z. There are a suitablenumber of radial ribs 0 formed on the outer surface of the indicatorplate 21, the use of which will be hereinafter explained.

A square bodied shaft 21 is loosely inserted through the indicator plate21, and slidably passes through the hub (Z wherein it is fitted loosely,the shaft then passing loosely through the post 18 and adjacent sidewall 12 of the case 12, having a washer g secured on this end thereof.Upon the opposite end of the shaft 21, which extends outside of theindicator plate 21, a turn button 22 is loosely secured by a set screw9. The turn button is recessed in its side that is nearest to theindicator plate 21, and in said recess a ribbed or other projection h isformed, which is so disposed that slight pressure on the turn buttonwill cause the rib h to ride successively over the radial ribs 6, whenthe button 22 is turned in either direction, these successive contactsor registering of the ribs being plainly felt by the person who isoperating the lock for opening the door from the outer side thereof.

Referring to the slide bolt 13, and bifurcated slide bar 14 thereon, itwill be noted in Figs. 2, 8, 4 and 8, that a complementary slide bar 15is provided that is lapped sidewise flat upon one side of the slide bar14 near the latch bolt nose 13. A longitudinal slot z is formed in theslide bar 14 and loosely receives a stud 2" that projects laterally fromthe mating slide bar 15*, said stud having heads thereon which retainthe two slide bars in loose engagement with each other. The slide bar 15is ofiset at a point near the pivot stud z" and from said point twolimbs 15*, before mentioned, are eX- tended, said limbs being spacedapart in parallel planes as is shown in Figs. 2 and 3. The roll backs17, 17*, before mentioned, are disposed rearward of and between thepairs of limbs 15, 15", and on the rear ends of said limbs lateral toesm are formed, that hook upon the curved ends of the limbs b of the rollbacks.

A contracting spring 23 is secured by its ends respectively on the frontend wall 12 of the case, and on the slide bar 14, the tension of saidspring pulling upon said slide bar and normally projecting the nose 13of the latch bolt outside of the end wall 12 of the case 12. The pull ofthe spring 23 normally rocks the spindle section 16, so as to disposethe limbs b on the roll back 17, vertically, so that the rockingmovement of the spindle section 16 will retract the latch nose 13, forits release from the jamb of the door casement, this being effected bythe slide bar 14 and limbs 15, while the other limbs 15 remainstationary, due to the swiveled connection between the spindle sections.

In each tumbler disk 19, 19, 19 a radial slot 72 is formed, and on thenormally upper edge wall of the case 12 three detent springs 0, 0, 0 aresecured which are curved down ward and forward, having their free endportions in enforced contact with the peripheries of the disks, as isshown in Figs. 2, 3 and 9, said springs serving to prevent the tumblerdisks from accidentally changing their adjustment. Upon the slide bar15", forward of the stud or pivot bolt 2', an arm 15 is bent laterallyand at It again rearwardly, thus providing a detent arm 15 thereon thathas contact at its free rear end with the peripheries of all the tumblerdisks 19, 19, 19 when the latter are turned so that the slots at thereinare not opposite said detent arm. The relative position of the stud i inthe slide bar 15 is such, that it will be disposed at the rear end ofthe slot 6 when the latch bolt nose 13 is projected from the wall 12 ofthe base 12, whereby said nose and the slide bar integral therewith maybe moved rearwardly to release said nose from spindle.

a casement jamb by turning the spindle section 16 without regard to theadjustment of the disks 19, 19, 19 or the detent arm 15 and it will beseen that the door having the improved lock and latch may be freelyopened by turning a knob 16 on the spindle section 16, in eitherdirection.

In the outer side of a door A on which the lock is mounted, a cuppedrecess 24: is

formed as indicated in Fig. 1, said recess being an opening in the outerwall of the door at the mortise therein, which contains the case 12directly over the indicator plate 21 and turn button 22, affording freeaccess thereto.

As before mentioned, the spindle section 16 extends loosely through thedoor out side thereof, and a knob I6 is mounted on saidoutwardlyextended portion of the It will be apparent, however, that ifthe combination for the alinementof the radial slots n has not beenmade, the detent arm 15 will be held from moving rearward, and thespindle 16 can not be turned with the knob on its outer end until aproper adjustment of the tumbler disks 19, 19, 19 is effected. To thisend the operator who has memorized the proper adjustment to be given,first turns the disk 19 and through it turns the other disks 19, bytaking hold of the turn button 22 and turning it a proper degree, whichwill cause the projection on the disk 19 to impinge upon the projectionon the middle disk 19, and it in turn will move the remaining disk 19.The proper manipulation of the turn button 22 forward and possiblybackward a degree indicated by the means already explained, will quicklydispose all the radial slots 01, in registry with each other, and thuspermit the free slidable insertion of the detent arm thereinto. The knob16 on the outer side of the door may now be turned somewhat, which willslide together the limbs 15, 15 rearward, and retract the latch boltnose 13 for release of the door, this retraction stretching the spring23, that will resume its normal condition when the knob 16 is free toturn, which will project the latch bolt nose 18 outward for engagementwith a strike plate on a door jamb when the door is closed.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

1. The combination with a lock case, of a latch bolt working through oneend wall of the case, a slide bar on the latch bolt, a transversespindle, made in sections loosely connected together, means connectingthe spindle with the slide bar for its retraction when the spindle isturned from one end thereof on the inner side of the lock, acomplementary slide bar to which the slide bar having the latch boltthereon is slidably secured, the said complementary slide bar beingadapted to cooperate with and move the slide bar carrying the latch boltto retract the bolt, and means for controlling the sliding movement ofthe complementary slide bar, the said means being releasable from theouter side of the door.

2. The combination with a lock case, of a bisected spindle transverselytherein, the two parts of the spindle being loosely connected together,two slide bars pivoted together laterally, a latch bolt nose on one ofsaid bars, means for connecting said slide bars with the two-partspindle, a plurality of tumbler disks which are adjustable from theouter side of the door whereon the lock is placed, and means on one ofsaid slide bars for engaging the tumbler disks.

3. The combination with a case, of a slide bar having a latch nose, andslidable in the case, a mating slide bar slidably secured on one side ofthe slide bar having the latch nose, a transverse knob spindle, knobsthereon outside of the case, the mating slide bar having a detent arm atone side thereof and on the forward end, and a combination lockingdevice in the case, adapted for preventing a sliding movement of themating slide bar and detent arm thereon.

a. In a lock of the character described, the latch bolt having a bevelednose, a fiat slide bar extended from said nose, two spaced limbs on therear end of the slide bar, toes bent laterally on free ends of thelimbs, means for engaging the toes of the slide bar to operate the same,a mating slide bar having a lateral stud thereon that loosely engages aslot in the bar carrying the latch nose, the forward end of the slidebar having the stud being bent laterally and rearwardly producing adetent arm thereon, a plurality of tumbler disks for engagement by saiddetent arm, and means for operating the said mating slide.

In a lock of the character described, the combination with a case, atransverse bisected spindle therein operated by a knob on each end, thetwo parts of the spindle being loosely connected together, a slide barhaving spaced limbs on one end, means carried by the spindle engagingsaid limbs adapted to slide the bar when the spindle is turned, a slopedlatch bolt nose on the other end of the slide bar, a mating slide bar, astud on said bar loosely engaging a slot in the other slide bar, alaterally bent member on the forward portion of the mating slide bar,and a detent arm extended rearward from the lateral member, of acombination locking device in the case, embodying three tumbler disks, ahollow post proj ected in the case from one side thereof, said disksbeing centrally mounted thereon, each disk having a lateral stud on itsside and a radial slot therein, a shaft extended through one side of thecase and through the post,

said shaft being adapted for rotating one disk, and means for rotatingsaid shaft from the outer end thereof.

6. In a lock of the character described, the combination locking andreleasing means, comprising a plurality of tumbler disks, a tubular postfor loosely supporting said disks side by side in a lock case, each ofsaid disks having a projection on one side and a radial slot therein,one of said disks having a recess on one side receiving the end of thesaid post and a hub on the opposite side, a central shaft extendingthrough the tubular post and hub and projecting at one side, anindicator plate on one side of the lock case through which theprojecting end of the shaft passes, radial ribs on the outer side of theindicator plate, a turn button on the adjacent end of the shaft, and arib on the turn button, that may register with either of the radial ribswhen the shaft is rotated.

7 The combination with a lock case, of a latch bolt working through oneend wall of the case, a slide bar rigid with the latch bolt and providedwith a slot, a second slide bar having a stud thereon loosely engagingsaid slot, the end stud being at the rear end of the said slot when thelatch bolt nose is projected, a knob spindle formed in two sections,means for connecting the said slide bars with the respective spindlesections, a spring connected with the first mentioned slide bar forprojecting the latch bolt nose from the case, and means for preventing arearward sliding movement, of the said sec- 0nd slide bar, the saidmeans being adjustable to release the said slide bar.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

LEANDER F. ROBERTS. lVitnesses C. F. OSBORN, G. J. SHARP.

